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Palmer Creek No. 2

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Ag
Other commodities Be; Cu
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale D-7
Latitude 60.7815
Longitude -149.5715
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located in the SE1/4 section 14, T. 8 N., R. 2 W., of the Seward Meridian. It is at an elevation of 2,900 feet, on the west fork of Palmer Creek. This is location 25 of Tysdal (1978 [MF-880-A]) and location S-291 of Jansons and others (1984). The location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The deposit consists of abundant thin quartz veins cutting graywacke of the Valdez Group of Late Cretaceous age (Nelson and others, 1985). The veins generally strike N62W to N85W and dip steeply to the north (Hoekzema and Sherman, 1983). They are intermittently exposed from this site southward for about 2 kilometers. A single grab sample collected by the U.S. Geological Survey contained 3 ppm silver, 10 ppm beryllium, and 370 ppm copper (Tysdal, 1978 [MF-880-A]). Samples collected by the U.S. Bureau of Mines assayed 0.09 ounce of silver per ton and 4 percent copper (Jansons and others, 1984).
Geologic map unit (-149.573661089649, 60.780924522322)
Mineral deposit model Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Mineral deposit model number 36a
Age of mineralization Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age.

Production and reserves

Workings or exploration The occurrence was first reported and sampled by Tysdal (1978 [MF-880-A]), who collected a grab sample that contained 3 ppm silver, 10 ppm beryllium, and 370 ppm copper. Samples collected by the U.S. Bureau of Mines contained 0.09 ounce of silver per ton, and 0.04 percent copper (Jansons and others, 1984). Trenches are reported nearby, but here there are no workings or improvements present.
Indication of production None

References

References

Hoekzema, R.P., and Sherman, G.E., 1983, Mineral investigations in the Chugach National Forest, Alaska (Peninsula study area): U.S. Bureau of Mines in-house report; held at U.S. Bureau of Land Management Alaska State Office, Anchorage, 524 p.
Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Mineral Land Assessment 5-84, 218 p., 2 sheets, scale 1:250,000.
Mitchell, P.A., 1979, Geology of the Hope-Sunrise (gold) mining district, north-central Kenai Peninsula, Alaska: Stanford University Master of Science thesis, 123 p.
Tysdal, R.G., 1978, Mines, prospects, and occurrences map of the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-880-A, 2 sheets, scale 1:250,000.
Reporters Jeff A. Huber (Anchorage)
Last report date 2/12/2000